Ultraviolet disinfection systems for drinking water : effective date, Aug. 1, 2012

30 Pages·2012·0.82 MB·English

by  AWWA

ANSI/AWWA F110-12
(First Edition)
The Authoritative Resource on Safe Water®
AWWA Standard
Ultraviolet
Disinfection Systems
for Drinking Water
SM
Effective date: Aug. 1, 2012.
This first edition approved by AWWA Board of Directors June 10, 2012.
Approved by American National Standards Institute June 7, 2012.
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AWWA Standard
This document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standards describe
minimum requirements and do not contain all of the engineering and administrative information normally contained in specifi-
cations. The AWWA standards usually contain options that must be evaluated by the user of the standard. Until each optional
feature is specified by the user, the product or service is not fully defined. AWWA publication of a standard does not constitute
endorsement of any product or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards
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codes of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry that
the product described will provide satisfactory service. When AWWA revises or withdraws this standard, an official notice of
action will be placed on the first page of the Official Notice section of Journal - American Water Works Association. The action
becomes effective on the first day of the month following the month of Journal - American Water Works Association publication
of the official notice.
American National Standard
An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American
National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an
American National Standard does not in any respect preclude anyone, whether that person has approved the standard or not,
from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. Ameri-
can National Standards are subject to periodic review, and users are cautioned to obtain the latest editions. Producers of goods
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Caution notiCe: The American National Standards Institute (ANSI) approval date on the front cover of this standard indicates
completion of the ANSI approval process. This American National Standard may be revised or withdrawn at any time. ANSI
procedures require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of
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or emailing [email protected].
ISBN-13, print: 978-1-58321-902-7 eISBN-13, electronic: 978-1-61300-197-4
ISBN-10, print: 1-58321-902-1 eISBN-10, electronic: 1-61300-197-5
All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopy, recording, or any information or retrieval system, except in the form of brief excerpts or
quotations for review purposes, without the written permission of the publisher.
Copyright © 2012 by American Water Works Association
Printed in USA
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Copyright © 2012 American Water Works Association. All Rights Reserved.
Committee Personnel
The AWWA Standards Committee on Ultraviolet Disinfection, which reviewed and approved this
standard, had the following personnel at the time:
Christine A. Cotton, Chair
General Interest Members
J.J. Christensen, HDR Engineering, Austin, Texas (AWWA)
C.A. Cotton, Malcolm Pirnie, Los Angles, Calif. (AWWA)
S. Farabaugh, Hazen & Sawyer, New York, N.Y. (AWWA)
T.J. McCandless,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA)
R.A. Hulsey, Black and Veatch, Kansas City, Mo. (AWWA)
E.D. Mackey,† Carollo Engineers, Walnut Creek, Calif. (AWWA)
J.P. Malley, University of New Hampshire, Durham, N.H. (AWWA)
J.A. Oppenheimer, MWH, Arcadia, Calif. (AWWA)
C. Schulz, CDM Inc., Denver, Colo. (AWWA)
P.D. Swaim, CH2M HILL Inc., Englewood, Colo. (AWWA)
H.B. Wright, Carollo Engineers, Boise, Idaho (AWWA)
Producer Members
K. Bircher, Calgon Carbon Corporation, Richmond Hill, Ont. (AWWA)
A.D. Festger, Trojan Technologies, Tucson, Ariz. (AWWA)
P. Bhupen, ITT-WEDECO, Greenwood, Ind. (AWWA)
O. Lawal, Aquionics Inc., Erlanger, Ky. (AWWA)
P.B. Posy, Atlantium Technologies, Bet Shemesh, Israel (AWWA)
User Members
G.S. Ajy, River To Tap, Roswell, Ga. (AWWA)
P. Lill, Poughkeepsie WTP, Poughkeepsie, N.Y. (AWWA)
W.J. Soucie, CLCJAWA, Lake Bluff, Ill. (AWWA)
J.A. Fleming, GCWW, Cincinnati, Ohio (AWWA)
J.A. Nilson, Seattle Public Utilities, Seattle, Wash. (AWWA)
S.W. Paxman, Weber Basin Water Conservation District, Layton, Utah (AWWA)
* Liaison, nonvoting
† Alternate
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Contents
All AWWA standards follow the general format indicated subsequently. Some variations from this
format may be found in a particular standard.
SEC. PAGE SEC. PAGE
Foreword 4 Requirements
I Introduction. ................................... vii
4.1 Required Equipment ......................... 5
I.A Background ..................................... vii
4.2 Data to Be Provided by Purchaser ..... 5
I.B History ............................................ vii
4.3 Data to Be Provided by the
I.C Acceptance ...................................... vii Manufacturer .............................. 8
II Special Issues .................................. viii 4.4 Materials ......................................... 11
III Use of This Standard ........................ ix 4.5 General Design ............................... 11
III.A Purchaser Options and 4.6 Validation........................................ 14
Alternatives ................................ ix
5 Verification
III.B Laying Length .................................. ix
5.1 Factory Testing ................................ 15
III.C Testing ............................................. ix
5.2 Installation ...................................... 16
III.D Modifications to Standard ................ ix
5.3 Manuals .......................................... 17
IV Major Revisions ................................ ix
6 Delivery
V Comments. ...................................... ix
6.1 Packaging ........................................ 18
Standard 6.2 Shipping, Handling, and Storage .... 18
1 General 6.3 Notice of Nonconformance ............. 19
1.1 Scope ................................................ 1 6.4 Affidavit of Compliance .................. 19
1.2 Purpose ............................................. 1
Table
1.3 Application ........................................ 1
1 Feedwater Quality Data to Be
2 References ........................................ 2 Provided by Purchaser ................. 7
3 Definitions ....................................... 2
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Foreword
This foreword is for information only and is not a part of ANSI*/AWWA F110.
I. Introduction.
I.A. Background. Ultraviolet (UV) disinfection systems have gained
increased acceptance for use in water treatment plants based on information that UV
disinfection could cost-effectively inactivate Cryptosporidium. In addition, the Long
Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) has recognized UV
disinfection as a best available technology for meeting the requirements of the rule.
I.B. History. The need for a standard addressing UV disinfection systems was
recognized by the American Water Works Association (AWWA) in November 2005.
The committee was appointed for the task of standardization and at the first inaugural
meeting in June 2006, a committee was formed to develop a standard. This first edition
was approved by the AWWA Board of Directors on June 10, 2012.
I.C. Acceptance. In May 1985, the US Environmental Protection Agency
(USEPA) entered into a cooperative agreement with a consortium led by NSF
International (NSF) to develop voluntary third-party consensus standards and a
certification program for direct and indirect drinking water additives. Other members of
the original consortium included the Water Research Foundation, (formerly AwwaRF)
and the Conference of State Health and Environmental Managers (COSHEM). The
American Water Works Association and the Association of State Drinking Water
Administrators (ASDWA) joined later.
In the United States, authority to regulate products for use in, or in contact with,
drinking water rests with individual states.† Local agencies may choose to impose
requirements more stringent than those required by the state. To evaluate the health
effects of products and drinking water additives from such products, state and local
agencies may use various references, including
1. An advisory program formerly administered by USEPA, Office of Drinking
Water, discontinued on April 7, 1990.
2. Specific policies of the state or local agency.
* American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036.
† Persons outside the United States should contact the appropriate authority having jurisdiction.
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Copyright © 2012 American Water Works Association. All Rights Reserved.
3. Two standards developed under the direction of NSF, NSF*/ANSI† 60,
Drinking Water Treatment Chemicals—Health Effects, and NSF/ANSI 61, Drinking
Water System Components—Health Effects.
4. Other references, including AWWA standards, Food Chemicals Codex, Water
Chemical Codex,‡ and other standards appropriate to the state or local agency.
Various certification organizations may be certifying products in accordance with
NSF/ANSI 61. Individual states or local agencies have authority to accept or accredit
certification organizations within their jurisdiction. Accreditation of certification orga-
nizations may vary from jurisdiction to jurisdiction.
Annex A, “Toxicology Review and Evaluation Procedures,” to NSF/ANSI 61 does
not stipulate a maximum allowable level (MAL) of a contaminant for substances not
regulated by a USEPA final maximum contaminant level (MCL). The MALs of an
unspecified list of “unregulated contaminants” are based on toxicity testing guidelines
(noncarcinogens) and risk characterization methodology (carcinogens). Use of Annex A
procedures may not always be identical, depending on the certifier.
ANSI/AWWA F110 does not address additives requirements. Therefore, users of
this standard shall consult the appropriate state or local agency having jurisdiction in
order to
1. Determine additives requirements, including applicable standards.
2. Determine the status of certification by all parties offering to certify prod-
ucts for contact with, or treatment of, drinking water.
3. Determine current information on product certification.
II. Special Issues. Conditions under which the UV disinfection system is to
be operated must be evaluated carefully by the purchasers. The evaluation must include
the determination of the hydraulic characteristics of the system in which the lamp will
be installed and the electrical circuits required for the operation of the lamp, including
the maximum and static differential pressures across the lamp and the range of flow
through the UV system under the most adverse operating conditions.
Small changes in transmittance in low-UV-absorbing waters can significantly
change UV dose delivery; where ultraviolet transmittance (UVT) monitors are used
as part of verifying adequate dose delivery, it is recommended the producer consider
* NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48105.
† American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036.
‡ Both publications available from National Academy of Sciences, 500 Fifth Street NW, Washington,
DC 20001.
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Copyright © 2012 American Water Works Association. All Rights Reserved.
tightening UVT error limits above the minimum standard where UVT is high (e.g.,
≥94 percent).
III. Use of This Standard. It is the responsibility of the user of an AWWA
standard to determine that the products described in that standard are suitable for use
in the particular application being considered.
III.A. Purchaser Options and Alternatives. The following information shall be
provided by the purchaser:
1. Standard used—that is, ANSI/AWWA F110, Ultraviolet Disinfection
Systems, of latest revision.
2. Equipment requirements (Sec. 4.1).
3. Request for validation status or an executive summary of the validation
report (Sec. 4.3.5).
4. Whether compliance with NSF/ANSI 61, Drinking Water System
Components—Health Effects, is not required (Sec. 4.4.1.1).
5. Details of other federal, state or provincial, and local requirements (Sec. 4.4.1).
6. Request for factory test results (Sec. 5.1.1.2).
7. Request for shop inspection by the purchaser (Sec. 5.1.1.3).
8. Request for a required number of training materials (Sec. 5.2.5.2).
9. Specify acceptance testing time requirements (Sec. 5.2.6).
10. Request storage requirements (Sec. 6.2.3).
III.B. Laying Length. There is not a standard laying length for UV disinfection
systems and because of this, interchangeability between various manufacturers may
not be possible without modification to the existing piping system. The purchaser is
cautioned to obtain this information from the manufacturers for verification prior to
purchase (Sec. 4.4.1).
III.C. Testing. This standard requires the manufacturer to have third-party
validation testing conducted on a fully assembled system. If the purchaser desires that
an additional validation test be conducted on the installed, fully assembled system, this
requirement should be specified in the purchase documents (Sec. 4.6).
III.D. Modifications to Standard. Any modification to the provisions, definitions,
or terminology in this standard must be provided by the purchaser.
IV. Major Revisions. This is the first edition of this standard.
V. Comments. If you have any comments or questions about this standard,
please call AWWA Engineering and Technical Services at 303.794.7711, FAX at
303.795.7603, write to the department at 6666 West Quincy Avenue, Denver, CO
80235-3098, or email at [email protected].
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